The Schema Editor of OpenIoT for Semantic Sensor Networks
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The document describes the Schema Editor tool within the OpenIoT platform for managing semantic sensor network schemas and metadata. The Schema Editor allows users to define sensor types, observed properties, and generate RDF instances for new sensor descriptions without requiring expertise in ontologies or RDF syntax. It provides an integrated interface for working with the SSN ontology and extending schemas directly within the OpenIoT platform.
The Schema Editor of OpenIoT for Semantic Sensor Networks
- 1. The Schema Editor of OpenIoT for Semantic Sensor Networks Prem P. Jayaraman, Jean-Paul Calbimonte and Hoan Nguyen Mau Quoc RMIT University, LSIR EPFL, Insight – NUI Galway SSN-TC 2015. International Semantic Web Conference ISWC 2015 Bethlehem, PA, October 2015 @jpcik 1
- 2. OpenIoT FP7 Open Source Cloud solution for the Internet of Things http://openiot.eu Established Open-source platform for IoT • Integrate sensors & things with cloud computing • Configure, deploy and use IoT services • Auditing/assessing privacy of IoT apps in the cloud • Semantic annotations of internet-connected objects • Energy-efficient data harvesting • Publish/subscribe for continuous processing and sensor data filtering • Mobility of sensors and QoS aspects in IoT https://github.com/OpenIotOrg/openiot Use cases and validation scenarios Smart Manufacturing Campus Guide Air Monitoring Agriculture Sensing 2
- 3. The OpenIoT Architecture Sensor data management Semantic data management Applications 3
- 4. Security (CAS) Physical Technology Plane Xively (Cosm - Pachube) CoAP (Sensors) MQTT Request Definition (IDE) ServiceDelivery &UtilityManager Request Presentation (IDE) Scheduler Configuration/ Monitor Console(IDE) Utility Application Plane Cloud DataBase (LSM-Light) Discovery Services X-GSN X-GSN Virtualized Plane User User 2 4 5 7 12 6 8 9 10 11 3 2 3 4 5 6 7 9 1 8 10 End User Request Discovery Services Query Content Collect Content / Mobile Sensor Configuration Content Adaptation Utility Service Feedback Service Delivery Service Visualisation Get Visualisation 11 Data Presentation 12 InfoSphere Streams 1 OthersUtility Metrics /Service Report X-GSN… Cloud Pub/Sub 5’ Pub/Sub Enabled Mobile Broker (Sensors) 0 0 Setup and Management 0’’ 0’’ 12 5’’ 0’ 0’ X-GSN 0’ OpenIoT Services and Components Application Plane 4
- 5. Request Definition & Presentation 5 Everything nice if your data is also nice Query Operators Data sources Output Widgets Find data streams
- 6. Request Definition & Presentation Data at this level is already RDF-ized Generated SPARQL queries 6
- 7. OpenIoT and the SSN Ontology 7 ssn:Sensor ssn:Platform ssn:FeatureOfInterest ssn:Deployment ssn:Property cf-prop:air_temperature ssn:observes ssn:onPlatform dul:Place dul:hasLocation ssn:SensingDevicessn:inDeployment ssn:MeasurementCapability ssn:MeasurementProperty geo:lat, geo:lng xsd:double ssn:hasMeasurementProperty ssn:Accuracy ssn:ofFeature aws:TemperatureSensor aws:Thermistor ssn:Latency dim:Temperature qu:QuantityKind cf-prop:soil_temperature cf-feat:Wind cf-feat:Surface cf-feat:Medium cf-feat:air cf-feat:soil dim:VelocityOrSpeed cf-prop:wind_speed cf-prop:rainfall_rate aws:CapacitiveBead … … … Where to look for vocabs? When do we set up the onto? Who sets it up? http://lsm.deri.ie/resource/4039002668863045 http://lsm.deri.ie/ont/lsm.owl#unit "Percent" Generated URIs? Vocabulary? Literals? http://purl.oclc.org/NET/ssnx/cf/cf-property http://www.w3.org/2005/Incubator/ssn/XGR-ssn/
- 8. Register metadata 8 If ontologies change… If we add new types of sensors? Do I have control over my sensor metadata?
- 9. Virtual Sensor configuration 9 <virtual-sensor name="room-monitor" > <addressing> <predicate key="geographical">BC143</predicate> <predicate key="usage"> room monitoring</predicate> </addressing> <life-cycle pool-size="10" /> <output-structure> <field name="image" type="binary:image/jpeg" /> <field name="temp" type="int" /> </output-structure> <storage permanent="true" history-size="10h" /> <input-streams> <input-stream name="cam"> <stream-source alias="cam" storage-size="1“ sampling-rate=“1”> <address wrapper=“tinyos2.x"> <predicate key=“host">tinybox.epfl.ch </predicate> <predicate key=“port">9001</predicate> </address> select * from WRAPPER </stream-source> <stream-source alias="temperature1“ storage-size="1m“ sampling-rate=“1”> <address wrapper="remote"> <predicate key="type">temperature</predicate> <predicate key="geographical">BC143-N </predicate> </address> select AVG(temp1) as T1 from WRAPPER </stream-source> <stream-source alias="temperature2“ storage-size="1m“> <address wrapper="remote"> <predicate key="type“>temperature</predicate> <predicate key="geographical“>BC143-S </predicate> </address> select AVG(temp2) as T2 from WRAPPER </stream-source> <query> select cam.picture as image, temperature.T1 as temp from cam, temperature1 where temperature1.T1 > 30 AND temperature1.T1 = temperature2.T2 </query> </input-stream> </input-streams> </virtual-sensor> Some metadata is here Sensor metadata configuration
- 10. Metadata properties 10 sensorID="http://lsm.deri.ie/resource/1099207032411018" sensorName=closedsense source=“Some source" sourceType=lausanne sensorType=lausanne information=Air Quality Sensors from Lausanne station 1 author=opensense feature="http://lsm.deri.ie/OpenIoT/opensensefeature" fields="humidity,temperature" field.temperature.propertyName="http://lsm.deri.ie/OpenIoT/ Temperature" field.temperature.unit=C field.humidity.propertyName="http://lsm.deri.ie/OpenIoT/Hu midity" field.humidity.unit=Percent field.co.propertyName="http://lsm.deri.ie/OpenIoT/CO" field.co.unit=PPM latitude=46.529838 longitude=6.596818
- 11. Turtle RDF registration 11 <sensor/5010> rdf:type aws:CapacitiveBead,ssn:Sensor; rdfs:label "Sensor 5010"; ssn:observes aws:air_temperature ; phenonet:hasSerialNumber <sensor/5010/serial/serial2> ; ssn:onPlatform <site/narrabri/Pweather> ; ssn:ofFeature <site/narrabri/sf/sf_narrabri> ; ssn:hasMeasurementProperty <sensor/5010/accuracy/acc_1> ; prov:wasGeneratedBy "AuthorName"; DUL:hasLocation <place/location1>; lsm:hasSensorType <sensorType1>; lsm:hasSourceType "SourceType". <sensorType1> rdfs:label "TypeName". <sensor/5010/serial/serial2> rdf:type phenonet:SerialNumber; phenonet:hasId "5010" . <sensor/5010> rdf:type aws:CapacitiveBead,ssn:Sensor; rdfs:label "Sensor 5010"; ssn:observes aws:air_temperature ; phenonet:hasSerialNumber <sensor/5010/serial/serial2> ; ssn:onPlatform <site/narrabri/Pweather> ; ssn:ofFeature <site/narrabri/sf/sf_narrabri> ; ssn:hasMeasurementProperty <sensor/5010/accuracy/acc_1> ; prov:wasGeneratedBy "AuthorName"; DUL:hasLocation <place/location1>; lsm:hasSensorType <sensorType1>; lsm:hasSourceType "SourceType". <sensorType1> rdfs:label "TypeName". <sensor/5010/serial/serial2> rdf:type phenonet:SerialNumber; phenonet:hasId "5010" . A bit more of semantics Need tools for this
- 12. Editing Ontologies? 12 Standard Tools Better Suited for ontologists Complex for small tasks No integration with IoT platofrms Generate RDF instances?
- 13. OpenIoT Schema Editor 13 Existing Sensor Types Observed properties Users exposed to URIs as identifiers
- 14. Sensor Types 14
- 15. Schema Editor: Sensor Types 15 Observed properties New Type Measurement Capabilities Generated RDF
- 17. Schema Editor: New Instances 17
- 18. OpenIoT Schema Editor 18 Based on Standards Schema Editor based on SSN Ontology Facilitates Extensions Integrated with OpenIoT Sensor Types and Instances Extensible Editor? URI generation? Link to Vocab Libraries? Validation of content? Beyond OpenIoT-only?Web User Interface
- 19. OpenIoT resources 19 OpenIoT Github https://github.com/OpenIotOrg/openiot OpenIoT VDK virtual Machine https://github.com/OpenIotOrg/openiot/wiki/VDKv2---OpenIoT-Rele Viedo Demos: http://www.youtube.com/user/OpenIoT
- 20. Muchas gracias! Jean-Paul Calbimonte LSIR EPFL @jpcik 20